Table 2

Bivariate relationships between haemoglobin concentrations, physical and cognitive performance and age as a continuous variable (n=4499)

Correlation coefficientP valuesCorrelation coefficientP values
Walk speed*0.0570.0090.0110.60
Grip strength*0.161<0.0010.076<0.001
Cognitive z-score0.0470.040.0270.19
Age; healthy only†−0.189<0.0010.1000.007
  • Pearsons correlation coefficient except for *Spearman’s rho.

  • †Excluding those with comorbid disease, impairment of activities of daily living or C reactive protein ≥4 mg/L.